When 15.3 g of sodium nitrate, NaNO, (85 g/mol), was dissolved in water in a constant-pressure calorimeter, the temperature fell from 25.008 °C to 21.568 °C. If the heat capacity of the solution and the calorimeter is 1339 JC, what is the enthalpy change when 1 mol of sodium nitrate dissolves in water? The solution process is NANO, (s) → Na (aq) + NO, (aq): AH =? A) 20.47 kJ/mol B) 25.59 kJ/mol C) 51.77 kJ/mol D) 79.00 kJ/mol E) 82.90 kJ/mol

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When 15.3 g of sodium nitrate, NaNO, (85 g/mol), was dissolved in water in a constant-pressure calorimeter, the temperature fell from 25.008 °C to 21.568 °C. If the heat capacity of the solution and the calorimeter is 1339 J/^ C, what is the enthalpy change when 1 mol of sodium nitrate dissolves in water? The solution process is

 

NaNO,(s) Na*(aq) + NO, (aq);

 

triangle H=?

When 15.3 g of sodium nitrate, NaNO, (85 g/mol), was dissolved in water in a
constant-pressure calorimeter, the temperature fell from 25.008 °C to 21.568
°C. If the heat capacity of the solution and the calorimeter is 1339 JC, what is
the enthalpy change when 1 mol of sodium nitrate dissolves in water? The
solution process is
NaNO, (s) → Na (aq) + NO, (aq):
AH=?
A) 20.47 kJ/mol
B) 25.59 kJ/mol
C) 51.77 kJ/mol
D) 79.00 kJ/mol
E) 82.90 kJ/mol
Transcribed Image Text:When 15.3 g of sodium nitrate, NaNO, (85 g/mol), was dissolved in water in a constant-pressure calorimeter, the temperature fell from 25.008 °C to 21.568 °C. If the heat capacity of the solution and the calorimeter is 1339 JC, what is the enthalpy change when 1 mol of sodium nitrate dissolves in water? The solution process is NaNO, (s) → Na (aq) + NO, (aq): AH=? A) 20.47 kJ/mol B) 25.59 kJ/mol C) 51.77 kJ/mol D) 79.00 kJ/mol E) 82.90 kJ/mol
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